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CVE-2026-16809— LimeSurvey Community Edition 7.0.5 - Stored XSS in quota message rendering

Quick assessment

Affected
LimeSurvey LimeSurvey
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LimeSurvey 社区版 7.0.5 在问卷配额创建流程中存在一个存储型跨站脚本（Stored XSS）漏洞。一个拥有创建和管理自己问卷权限的低权限认证用户，可以在配额消息（quota message）中植入恶意 JavaScript 代码。 该问题影响 LimeSurvey 7.0.5 版本。

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-16809

Vulnerability Information
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Vulnerability Title
LimeSurvey Community Edition 7.0.5 - Stored XSS in quota message rendering
Source: CVE Program / CVE List V5
Vulnerability Description
LimeSurvey Community Edition 7.0.5 contains a stored cross-site scripting vulnerability in the survey quota creation workflow. An authenticated low-privileged user who can create and manage their own survey can store malicious JavaScript in a quota message. This issue affects LimeSurvey: 7.0.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
LimeSurvey LimeSurvey 7.0.5 -

II. Public POCs for CVE-2026-16809

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III. Intelligence Information for CVE-2026-16809

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Vendor Advisories for CVE-2026-16809 (1)

Same Patch Batch · LimeSurvey · 2026-08-26 · 4 CVEs total

CVE-2026-15973 8.4 HIGH LimeSurvey 7.0.5 - Stored XSS in Survey Menu Entries
CVE-2026-63360 7.4 HIGH LimeSurvey Community Edition 7.0.5 - Reflected XSS in user activation confirmation endpoin
CVE-2026-65930 4.8 MEDIUM LimeSurvey Community Edition 7.0.5 - Stored XSS in replacement-fields

IV. Related Vulnerabilities

Same product: LimeSurvey
Same vendor: LimeSurvey
Same weakness: CWE-79

V. Comments for CVE-2026-16809

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